SHARE-BASED COMPENSATION: (Tables)

3 Months Ended

Jun. 30, 2014

SHARE-BASED COMPENSATION:

Schedule of option activity

	Number of shares		Weighted-average exercise price per share		Weighted-average remaining contractual term (in years)	Aggregate intrinsic value (in thousands)
Outstanding at March 31, 2014	4,538,518		$	20.30
Granted	381,509		$	21.17
Exercised	(14,137	)	$	18.79		$	50
Forfeited or cancelled	(520,923	)	$	34.66
Outstanding at June 30, 2014	4,384,967		$	18.67	4.73	$	19,297
Exercisable at June 30, 2014	3,152,528		$	19.09	3.25	$	14,034

Summary of stock options outstanding and exercisable

Following is a summary of stock options outstanding and exercisable as of June 30, 2014:

	Options outstanding				Options exercisable
Range of exercise price per share	Options outstanding	Weighted- average remaining contractual life	Weighted-average exercise price per share		Options exercisable	Weighted-average exercise price per share
$   6.32 - $   8.90	39,668	3.61 years	$	8.74	39,668	$	8.74
$ 11.08 - $ 14.42	1,728,984	6.01 years	$	13.21	1,115,733	$	13.04
$ 15.10 - $ 19.76	686,167	2.20 years	$	16.38	686,167	$	16.38
$ 20.44 - $ 25.00	1,590,000	5.15 years	$	22.32	990,364	$	22.95
$ 26.33 - $ 29.30	115,358	1.03 years	$	27.94	115,358	$	27.94
$ 32.85 - $ 35.16	91,812	2.76 years	$	34.45	72,260	$	34.88
$ 40.88 - $ 62.06	132,978	1.13 years	$	41.82	132,978	$	41.82
	4,384,967	4.73 years	$	18.67	3,152,528	$	19.09

Summary of SAR activity

	Number of shares	Weighted-average exercise price per share		Weighted-average remaining contractual term (in years)	Aggregate intrinsic value (in thousands)
Outstanding at March 31, 2014	—	$	—
Granted	245,404	$	40.00
Outstanding at June 30, 2014	245,404	$	40.00	2.76	$	—
Exercisable at June 30, 2014	—	$	—	—	$	—

Schedule of non-vested time-vesting restricted stock unit activity

	Number of shares		Weighted average fair value per share at grant date		Weighted-average remaining contractual term (in years)
Outstanding at March 31, 2014	1,078,029		$	18.46	2.17
Granted	395,902		$	21.17
Vested	(302,774	)	$	16.19
Forfeited or cancelled	(16,091	)	$	21.65
Outstanding at June 30, 2014	1,155,066		$	19.94	2.65

Schedule of non-vested performance-based restricted stock unit activity

	Number of shares		Weighted average fair value per share at grant date		Weighted-average remaining contractual term (in years)
Outstanding at March 31, 2014	1,066,828		$	14.19	0.91
Granted	232,274		$	19.29
Vested	(115,086	)	$	14.38
Forfeited or cancelled	(4,474	)	$	26.00
Outstanding at June 30, 2014	1,179,542		$	15.13	1.16

Summary of other performance unit activity

	Number of shares	Weighted average fair value per share at grant date		Weighted-average remaining contractual term (in years)
Outstanding at March 31, 2014	—	$	—	—
Granted	201,464	$	5.18
Outstanding at June 30, 2014	201,464	$	5.18	2.76